Can I sort my Steam games by installed size?

Solution 1:

In the newer version of Steam, go to LIBRARY

and in the second block ("shelf") under "WHAT'S NEW", set dropdown to "ALL" and "SORT BY" "Size on Disk".

Solution 2:

Yes. If you go to library and use 'list view' (accessible using the circled button) , then right click in the bar which says Games/Status/Metascore you can select the displayed columns. Click on 'Size on Disk' so that appears as a column, then click on the column header to sort.

If it defaults to showing them in descending order, another click will change the order to ascending.

Solution 3:

In the current version of Steam (October 2021), go to Settings/Preferences... -> Downloads -> STEAM LIBRARY FOLDERS

This will open the "Storage Manager" where you can select Sort By: Size on Disk

Here you can also conveniently remove games.